Air-valve for radiators.



' H. W. GLOUOHBK.

AIR VALVE FOR RADIATORS.

APPLICATION FILED APR.15, 1914.

Patented Dec. 15,1914.

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HENRY WALKER GLOU CHEK, OF TWIN FALLS, IDAHO.

' AIR-VALVE. FOR RADIATORS.

To all whom it may concern Be it known that I, HENRY WALKER CLOUCHEK, a citizen of the United States, residing at Twin Falls, in the county of Twin Falls and State of Idaho, have invented certain new and useful Improvements in Air-Valves for. Radiators, of which the followingis a specification, reference being had to the accompanying draw ings.

This invention relates to new and useful improvements in air valves, and more particularly to that class of air valves which are applicable for use in connection with radiators for steam or vacuum heating systems.

An object of this invention is the provision of a valve of this character, which is operated by an expansible fluid such as mercury, contained within the valve casing,

upon changes of the temperature within the casing.

A further ob]ect of this invention is the provision of a valve, the casing of wh1ch is directly connected with the radiator of a heating system, the valve contained Within the casing being open when the radiator is,

cold, to allow the escape of air from the radiator owing to the pressure of the steam, when the same is passed into the radiator, until the steam entering the valve casing heats the mercury or the like liquid contained therein so that the mercury expands, and closes the valve to prevent escape of the steam from the radiator.

With these and other objects in view, my invention consists in the novel construction, combination and arrangement of parts to be hereinafter fully described, claimed, and

illustrated in the accompanying drawing, in

which Figure 1 is a vertical section of my air valve. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3 is a section on theline 33 of Fig. 1.

Specification of Letters Patent.

PatentedDecr-l5, 1am.

Application filed April 15, 1914. Serial No. $32,038.

is open, and is provided with interior threads for engagement with the exterior threads of a screw cap ,7 which is adapted to close the casing Secured in the vent 5 at the lower end of the casing, is the lower end of a tube 8 which is preferably formed 'of copper, the tube extending upwardly in the casing to a point adjacent the upper end thereof, and the upper end of the tube being bent downwardly, and the extremity thereof being flared to form a valve seat 9. Formed integral with the casing below the valve seat t) of the tube 8 is a cup 10, which is adapted to receive mercury 11 or other expansible fluid. A float 12 is disposed upon the fluid contained in the cup, the float be ing provided with a central upstanding stem 13 which is formed at its upper extremity with a needle valve 14, the valve l4being disposed normally below the valve seat 9 and 'in vertical alinement therewith. A screw cap 15 is provided for the cup 10, the

cap having a central opening 16 therein to receive the stem 13, and surrounding the opening 16 1s a depending sleeve 17 which also surrounds the stem and provides a guide therefor.

In the practical use of my invention, the nipple 3 of the valve is applied in an opening in the radiator 1, before the steam is admitted thereto. As the radiator is then cold, the float 12 is in its lowermost position and the valve 14 is removed from the valve seat 9, so that -upon admission of steam to the radiator, air will be allowed to escape from the valve through the tube 8 by reason of the pressure of the steam. When all the air has been exhausted from the radiator, and the steam enters the valve casing, the mercury or other expansive fluidin the cup 10 becomes heated and expands thereby raising the float and forcing the valve 14 against its seat 9 preventing egress of the steam from the valve. lVhen the admission of steam to the radiator is cut off, the steam remaining in the radiator and the valve casing cools, and the mercury within the cup contracts thereby removing the valve 14 from its seat 9, so as to allow air to reenter the radiator and prevent a partial vacuum therein owing to the condensation of the steam.

While I have described my invention'as for use in connection with steam radiators, it will be understood that the same may be applicable to vacuum systems, the only change necessary being to connect one end of the pipe or other means (not shown) to the end of the extension 4, the opposite end of the pipe being connected to the heating system.

having thus fully described my invention,

2. An air valve for radiators or the like,

comprising a casing, a cup formed within the casing, expansive fluid contained within the cup, a reduced extension having an opening therein communicating with the interior casing, and projecting from the lower end.

thereof, a tube having its outer end secured inthe opening in the reduced extension, said tube extending upwardly within the casing above the upper end of the cup, the free ex- 3. An air valve for radiators or the like comprising a casing having an opening therein, a cup formed within the casing, ex-

pansive fluid contained Within the cup, a tube having its outer end secured within the opening in the casing, the inner end of the tube extending within the casing and having its free end disposed above the cup in vertical alinement therewith, the vinnerv extremity of said tube being formed with a valve seat, a cap having acentral opening adapted to close the upper end of said cup, a sleeve surrounding said opening and extending downwardly within the cup to form a guide sleeve, a float disposed upon the fluid, a stem projecting upwardly from the fioat and being disposed through the guide sleeve in said cap, and said stem being formed on its upper extremity with a valve for engagement with the valve seat on the inner extremity of the tube upon expansion of the fluid contained within the cup.

, Intestimony whereof I hereunto aflix my signature in the presence of two witnesses.

HENRY WALKER CLOUCHEK.

Witnesses:

OWEN CALHOUN,- C. P. DiMMrr'r;

Copies of this patent may be obtained for five cents each, by addressing the Commissioner'ot Patents,

Washington, D. C. 

